A period of agricultural innovation that increased food production worldwide through the use of high-yield crops and modern farming techniques is known as which?

• A. Green Revolution
• B. First Agricultural Revolution
• C. Columbian Exchange
• D. Enclosure System

Answer: (A)

The period being described is the Green Revolution. It refers to the mid-20th century shift in global farming that dramatically boosted food production by using high-yielding crop varieties, along with modern farming practices like expanded irrigation, synthetic fertilizers, pesticides, and greater mechanization. These innovations, especially for wheat and rice, led to much higher yields per acre and helped feed growing populations in many countries, turning warned-of famines into more stable food supplies. The other options point to different historical changes: the First Agricultural Revolution marks the long-ago move from hunting and gathering to farming; the Columbian Exchange describes the transfer of crops and animals between the Americas and the Old World after 1492; and the Enclosure System was about reorganizing land in Britain to consolidate fields, which increased efficiency locally but doesn’t describe a worldwide program of high-yield crops and modern farming techniques.